Gets the active BindingExpression object.
Assembly: PresentationFramework (in PresentationFramework.dll)
Property ValueType: System.Windows.Data.BindingExpressionBase
The active BindingExpression object; or null, if no BindingExpression object is active. Although the return type is BindingExpressionBase, the returned object is only a BindingExpression object because the PriorityBinding class currently supports only Binding objects.